Laserfiche WebLink
SAFETY PRECAUTIOI~S FOR P,ESIN GROUTED RODS <br />~• 1. Persons responsible for installation of resins shall be instructed in <br />safe handling precautions for such materials. <br />2. The relationship between the hole dimensions, rod size, and the size <br />and number of resin cartridges is critical; therefore, adequate train- <br />ing and supervision shall be provided to assure proper installation. <br />3. All safety precautions required in the regular roof control plan shall <br />apply--except Nos. 12,13 (The torque checks specified for <br />conventional roof bolts do not apply.) <br />4. Resin grouted rods shall be installed as soon as possible (to be deter- <br />mined on a mine-to-mine basis--normally not more than 8 hours) after <br />the working place is exposed. ldhere required, temporary supports shall <br />be installed immediate]y after the loading cycle is completed unless <br />roof boltino machines are equipped with acceptable automated supports. <br />(a) Except when the District Manager has determined that more than <br />5 minutes are needed, "immediately" is interpreted to mean that <br />the installation of such temporary supports shall be started <br />not later that 5 minutes after mining of the cut is completed <br />and, after the installation of such supports is started, the <br />installation of supports shall be continued until at least the <br />minimum number are installed as required in the approved plan. <br />5. Resin grouted rods end conventional roof bolts shall not be intermixed <br />unless they are either used as supplementary support or a systematic <br />plan has been approved by the District Manager for conbinino the two <br />roof support systems. <br />6. Drill steel shall be equivalent in length to the rods used or adequately <br />marked to assure the proper hole depth. Each drill hole shall be filled <br />the entire length with resin. <br />7. (a) All resin grouted rods shall be used with bearing plates approved <br />for use at the mine. <br />(b) Bearing plates shall be installed tight against the mine roof. <br />2. (a) The resin shall not be used if manufacturer's recommended shelf <br />life is exceeded. <br />(b) Resin packages shall be protected form excessive heat and cold <br />during storage, and shall not be used in areas where the ambient temp- <br />erature fal]s outside the range recommended by the manufacturer. <br /> <br />l8 <br />